Trigeminal Neuralgia Electrophysiology
Key facts
- Where
- Minneapolis, United StatesSee the site
Where in United States
- University of MinnesotaMinneapolis, United StatesContact: Matthew MapleTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- University of Minnesota
- Trial code
- NCT05269472
- Record updated
- 5 November 2026
- Original description
The study intervention is to perform standard somatosensory evoked responses limited to the face during rhizotomy procedures of the gasserian ganglion (trigeminal ganglion) for the treatment of trigeminal neuralgia. The evoked responses will be measured at two locations before and after the clinical rhizotomy including: the standard contralateral scalp (EEG) and at the gasserian ganglion through an FDA-approved recording electrode.Read full original descriptionShow less
Trigeminal Evoked Responses to Improve Rhizotomy
The study intervention is to perform standard somatosensory evoked responses limited to the face during rhizotomy procedures of the gasserian ganglion (trigeminal ganglion) for the treatment of trigeminal neuralgia. The evoked responses will be measured at two locations before and after the clinical rhizotomy including: the standard contralateral scalp (EEG) and at the gasserian ganglion through an FDA-approved recording electrode.
Inclusion: Adults of 18 years or older; Scheduled to undergo percutaneous rhizotomy for facial pain; Adults of 18 years or older.
Exclusion: Diagnosis or history of facial pain such as TMD or TGN; History of migraine; History of any functional pain disorder: fibromyalgia, IBS, CRPS; Facial pain of unclear origin (i.e. not clearly TGN pain); Rhizotomy procedure canceled; Recent chronic pain (within last month); Unwilling to participate for two hours in lab; Current acute pain.